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27,404 Article Results

Data and Metadata Exchange Design with SDMX Format using Web Service for Interoperability Statistical Data

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1485
Jaka Sembiring , Ana Uluwiyah
Today’s concept of Open Government Data (OGD) for openness, transparency and ease of access of data owned by government agencies becomes increasingly important. This initiative emerges from the demand of data users for the data belongs to the government agencies. The data services providing an easy access, cheap, fast, and interoperability are needed by the users and becomes important indicator performance for respective government agencies. Statistical Data and Metadata Exchange (SDMX) is a new standard format in the data dissemination activities particularly in the exchange of statistical data and metadata via Internet. In this respect SDMX support the implementation of OGD project. This paper is on the technical design, development and implementation of data and metadata exchange service of statistical data using SDMX format to support interoperability data through web services. Three results are proposed: (i) framework for standardization of structure of statistical publications data model with SDMX; (ii) design architecture of data sharing model; and (iii) web service implementation of data and metadata exchange service using Service Oriented Analysis and Design (SOAD) method. Implementation at Statistics Indonesia (BPS) is chosen as a case study to prove the design concept. It is shown through quantitative assessment and black box testing that the design achieves its objective. DOI: http://dx.doi.org/10.11591/telkomnika.v14i2.7505
Volume: 14
Issue: 2
Page: 343-352
Publish at: 2015-05-01

New Bipolar Hybrid Carrier PWM Strategies for Symmetrical Multilevel Inverter

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1470
C.R. Balamurugan , S.P. Natarajan , R. Bensraj
In this paper, hybrid modulation methods suitable for H-bridge MLI are discussed. The results of experimental work using dSPACE system only are presented for three phase five level cascaded type inverter. Different hybrid carrier PWM (Pulse Width Modulation) strategies using sinusoidal reference, third harmonic injection reference, 60 degree reference and stepped wave reference for the chosen inverter are initially developed using SIMULINK. Strategies developed are then implemented in real time using dSPACE/RTI. The five level output voltages of the chosen MLI (MultiLevel Inverter) obtained using the dSPACE system based PWM strategies and the corresponding % THD (Total Harmonic Distortion) and VRMS (fundamental) are presented and analyzed. It is seen that sinusoidal reference with PS+VF (Phase shift+Variable Frequency) and PS+PD (Phase Disposition) provides output with relatively low distortion. APOD+CO (Alternative Phase Dispostion+Carrier Overlapping) and CO+PD PWM strategy is found to perform better since it provides relatively higher fundamental RMS output voltage and relatively lower stress on the devices. It is displayed that THI (Third Harmonic Injection) reference with PS+VF and CO+PS provides output with relatively low distortion. APOD+CO and CO+PS PWM strategy is found to perform better since it provides relatively higher fundamental RMS output voltage and relatively lower stress on the devices. It is observed that 60 degree reference with PD+VF provides output with relatively low distortion. CO+PD PWM strategy is found to perform better since it provides relatively higher fundamental RMS output voltage and relatively lower stress on the devices. It is noted that stepped wave reference with APOD+PD and PD+VF provides output with relatively low distortion. APOD+CO and CO+PD PWM strategy is found to perform better since it provides relatively higher fundamental RMS (Root Mean Square) output voltage and relatively lower stress on the devices. The simulation and hardware results closely match with each other. DOI: http://dx.doi.org/10.11591/telkomnika.v14i2.7362 
Volume: 14
Issue: 2
Page: 228-240
Publish at: 2015-05-01

Technology Content Analysis with Technometric Theory Approach to Improve Performance in Radiodiagnostic Installation

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1486
Bambang Guruh Irianto , Abdul Rahman , Herry Andayani
Installation Radiodiagnostic RSU Haji Surabaya facilitated some medical equipment for disease examinations  and have three  technology criteria: Examination by high technology equipment   (single-slice CT Scan), examination by intermediate equipment (General x-ray ≤ 300 mA / 125 KV) and examination by simple equipment  (Portable Dental x-ray ≤ 8 mA / 70 KV). When viewed in terms of revenue contribution to the Hospital, Radiodiagnostic Installation revenue from 2008 to 2012 has decreased continuously.  The aim of research for  measuring the contribution of each component technology: Tehnoware, Humanware, Inforware, and Orgaware on radiodiagnostic installation with the basic technometric theory approach  using indicator TCC (Technology Contribution Coefficien). The final results showed that a gap is almost evenly from the three technology components Humanware = 0519, Inforware = 0.538, orgaware = 0.534, but the gap is greatest in technology components Technoware = (0387, 0258, 0168), meaning that the strategy development units Radiodiagnostic  Installation prioritized to increase in aspect Technoware (rejuvenation medical equipment). DOI: http://dx.doi.org/10.11591/telkomnika.v14i2.7676
Volume: 14
Issue: 2
Page: 353-362
Publish at: 2015-05-01

The Design and Simulation of Fuzzy PID Parameter Self-tuning Controller

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1477
Wei Xie , Jianmin Duan
Based on parameter self-tuning fuzzy PID controller, a fuzzy inference method is utilized to realize automatic regulating PID parameter, and the application of the controller in a system is studied with MATLAB in this paper. The combination of PID controller system and fuzzy controller system combines the convenience of PID control together with the flexibility of fuzzy control, and takes advantage of the traditional control, which has a great practical significance. The results of simulation show that fuzzy PID parameter self-tuning controller has a better control effect than the traditional one, and can improve the static and dynamic properties of the system well. DOI: http://dx.doi.org/10.11591/telkomnika.v14i2.7674 
Volume: 14
Issue: 2
Page: 293-297
Publish at: 2015-05-01

QCA and CMOS Nanotechnology Based Design and Development of Nanoelectronic Security Devices with Encryption Schemes

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1474
Devendra K. Verma , P. K. Barhai , V. Nath
In WiMAX/WiFi Wireless Environment the Transfer of Data/Information is vulnerable to external attacks as it takes place through an open-air medium. The Data/Information is vulnerable to Jamming, Detection, Interception, Network Injection, Interruption, Modification, Packet Scrambling, Fabrication, Unauthorised forwarding and Denial-of-Service (DoS). Our Research Work focuses on ‘QCA & CMOS Nanotechnology based Design & Development of Nanoelectronic Security Devices with Encryption Schemes to provide/enhance Security and Privacy for WiMAX/WiFi/Satellite Wireless Communication Systems. The Schemes are based on Dynamic Channel Hopping, Random Channel Selection, Cryptography and Encryption of Information/Data/Control Codes. DOI: http://dx.doi.org/10.11591/telkomnika.v14i2.7485
Volume: 14
Issue: 2
Page: 270-279
Publish at: 2015-05-01

Power Quality Improvement Using Custom Power Devices in Squirrel Cage Induction Generator Wind Farm to Weak-Grid Connection by using neuro-fuzzy control

10.11591/ijpeds.v5.i4.pp477-485
Kopella Sai Teja , R.B.R. Prakash
Wind farm is connected to the grid directly.The wind is not constant voltage fluctuations occur at point of common coupling (PCC) and WF terminal . To over come this problem a new compensation strategy is used . By using Custom power devices (UPQC).It injects reactive power at PCC . The advantages of UPQC is it consists of both DVR and D-STATCOM . DVR is connected in series to the line and it injects in phase voltage into the line .D-STATCOM is connected shunt to the line .The internal control strategy is based on management of active and reactive power in series and shunt converters of UPQC . The power exchainge is done by using DC-link
Volume: 5
Issue: 4
Page: 477-485
Publish at: 2015-04-12

Bus Arrival Prediction – to Ensure Users not to Miss the Bus

10.11591/ijece.v5i2.pp333-339
Lutfi Fanani , Achmad Basuki , Deron Liang
Predicting arrival times of buses is a key challenge in the context of building intelligent public transportation systems. The bus arrival time is the primary information for providing passengers with an accurate information system that can reduce passenger waiting times. In this paper, we used the normal distribution method to the random of travel times data in a bus line number 243 in Taipei area. In developing the models, data were collected from Taipei Bus Company. A normal distribution method used for predicting the bus arrival time in bus stop to ensure users not to miss the bus, and compare the result with the existing application. The result of our experiment showed that our proposed method has a better prediction than existing application, with the probability user not to miss the bus in peak time is 93% and in normal time is 85%, greater than from the existing application with the 65% probability in peak time, and 70% in normal time.
Volume: 5
Issue: 2
Page: 333-339
Publish at: 2015-04-02

Building Integrated Photovoltaic is a Cost Effective and Environmental friendly Solution

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/1447
M T ripathy , P K Sadhu
Building integrated photovoltaic (BIPV) market is under developing stage with a relatively low number of installations worldwide. However, integrating photovoltaic technology into buildings is straight forward as no additional space is required and building materials are simply replaced by PV modules. Although BIPV is considered a promising technology, especially where land for large-scale PV plants is rare, several factors continue to constrain its wide-spread adoption BIPV thus promises to become an attractive alternative for both end users and for national policy makers. In this paper we analyse the investment of BIPV, benefits of BIPV power system and cost of BIPV power system. DOI: http://dx.doi.org/10.11591/telkomnika.v14i1.7729 
Volume: 14
Issue: 1
Page: 49-54
Publish at: 2015-04-01

Simplified Method for Single Line to Ground-Fault Location in Electrical Power Distribution Systems

10.11591/ijece.v5i2.pp221-230
Mustapha Zahri , Youssef Menchafou , Hassane El Markhi , Mohamed Habibi
Power distribution systems play important roles in modern society. When distribution system outages occur, speedy and precise fault location is crucial in accelerating system restoration, reducing outage time and significantly improving system reliability, and then improves the quality of services and customer satisfaction. In this paper, we propose a reduced algorithm utilizing the sum of sending-end currents of the three phases to calculate the fault current, and therefore, avoid the iterative aspect of the classic algorithm for single line to ground fault location and reduce its computational charge. The test results are obtained from the numerical simulation using the data of a distribution line recognized in the literature.
Volume: 5
Issue: 2
Page: 221-230
Publish at: 2015-04-01

A Novel Spectral Clustering based on Local Distribution

10.11591/ijece.v5i2.pp361-370
Jyotsna Kumar Mandal , Parthajit Roy
This paper proposed a novel variation of spectral clustering model based on a novel affinitymetric that considers the distribution of the neighboring points to learn the underlayingstructures in the data set. Proposed affinity metric is calculated using Mahalanobis distancethat exploits the concept of outlier detection for identifying the neighborhoods of the datapoints. RandomWalk Laplacian of the representative graph and its spectra has been consideredfor the clustering purpose and the first k number of eigenvectors have been consideredin the second phase of clustering. The model has been tested with benchmark data and thequality of the output of the proposed model has been tested in various clustering indicesscales.
Volume: 5
Issue: 2
Page: 361-370
Publish at: 2015-04-01

Real Coded Genetic Algorithm Based Improvement of Efficiency in Interleaved Boost Converter

10.11591/ijpeds.v5.i4.pp529-540
M Arundevi , K Valarmathi , R Mahendran
 The reliability, efficiency, and controllability of Photo Voltaic power systems can be increased by embedding the components of a Boost Converter. Currently, the converter technology overcomes the main problems of manufacturing cost, efficiency and mass production. Issue to limit the life span of a Photo Voltaic inverter is the huge electrolytic capacitor across the Direct Current bus for energy decoupling. This paper presents a two-phase interleaved boost converter which ensures 180 angle phase shift between the two interleaved converters. The Proportional Integral controller is used to reshape that the controller attempts to minimize the error by adjusting the control inputs and also real coded genetic algorithm is proposed for tuning of controlling parameters of Proportional Integral controller. The real coded genetic algorithm is applied in the Interleaved Boost Converter with Advanced Pulse Width Modulation Techniques for improving the results of efficiency and reduction of ripple current. Simulation results illustrate the improvement of efficiency and the diminution of ripple current.
Volume: 5
Issue: 4
Page: 529-540
Publish at: 2015-04-01

Determination of Number of Channels in Multiple Access Techniques for Wireless Communications

10.11591/ijict.v4i1.pp1-6
Venkata Raghavendra Miriampally , G. Subba Rao , V Sudheer Raja
In wireless communications system, it is desirable to allow the subscriber to send simultaneously information to the base station while receiving information from base station. Multiple access techniques are used to allow many mobile users to share simultaneously a finite amount of radio spectrum. Frequency division multiple access (FDMA), time division multiple access(TDMA), and code division multiple access (CDMA) are the three major access techniques used to share the available bandwidth in a wireless communication system. In this paper we calculated the number of channels required for FDMA & TDMA techniques depending on various factors such as spectrum, channel band width etc.
Volume: 4
Issue: 1
Page: 1-6
Publish at: 2015-04-01

Multiple Processes for Least Mean Square Adaptive Algorithm on Roadway Noise Cancelling

10.11591/ijece.v5i2.pp355-360
Sri Arttini Dwi Prasetyowati , Adhi Susanto
Noise is a problem often found in daily life. Noise also make people could not concentrate to do their work. Efforts to reduce noise have been proposed, but, due to variety of the noise’s characteristics, every noise problem requires different solution. This research aim to cancel  the vehicle’s noise while maintaining the information heard. These conditions happened in the hospitals classrooms, or work room near the roadway. The vehicle’s noise change very fast, so the adaptive system is the good solution candidate for solving this problem. On the beginning, the simulation process had the trouble with the iterations. Matlab software only can execute the certain range of iteration. It could not cancel the noise, even the information becomes criptic. The problem is how to cancell the vehicle’s noise with the restriction software and still manage the important information. This research will modify the LMS adaptive algorithm so that the iteration could be done by the system and the main goal of the research could be reached. The modification of the algorithm is based on the filter length (L) used to adapt with the noise. Therefore, this research conducted simulation of the Adaptive Noise Cancelling with two process steps. The output of the first adaptive process have the.same characteristics with the noise that would be cancelled, thus the first adaptive process have the error near to zero.  The second adaptive process changes the input by the output of the first process and mix the information into the noise. Error occured in the final process is the information heard as the dominant output.
Volume: 5
Issue: 2
Page: 355-360
Publish at: 2015-04-01

A Power System Stabilizer for Multi-Machine Power Based on Hybrid BF0A-PSO

10.11591/ijece.v5i2.pp213-220
Mary Saranya , Rajapandiyan A , Fathima K. , Hema S , GeethaPriya S , Saravanan S
Bacterial Swarm Optimization (BSO) is used to design Power System Stabilizers in a multi machine power system. In BSO, the search directions of tumble behavior for each bacterium are oriented by the individual’s best location and the global best location of PSO. The hybrid BFOA-PSO algorithm has been applied to IEEE 14 bus test system under normal, light and heavy load conditions. Simulations results have revealed the strength of the BSO in tuning Power System Stabilizers under normal, light and heavy load conditions. The results present the effectiveness of the controller to improve the power system stability over a different range of loading conditions.
Volume: 5
Issue: 2
Page: 213-220
Publish at: 2015-04-01

Coloring of Cervical Cancer’s Ct Images to Localize Cervical Cancer

10.11591/ijece.v5i2.pp304-310
Erlinda Ratnasari Putri , Amar Vijai Nasrulloh , Arfan Eko Fahrudin
Cervical cancer is the most common gynecologic cancer in women. Cervical cancer and the normal cervix usually have similar attenuations on CT images which are obtained. The normal cervix and the tumour cannot be distinguished on normal CT images. CT image of cervical cancer is used by the experts for the analysis of diseases. In this research study, CT image of cervical cancer is done with process of image segmentation and coloring. The process of image segmentation is done after the image sharpening process and the determination of cervical cancer’s area. Fuzzy C-Means is used as the algorithm for image segmentation. The colors of image segmentation result are changed by program module. The result is the colors of image segmentation uniform with the other results. The image is overlayed with image result of image sharpening process. Coloring image purposes are to distinguish between cervical cancer’s area and normal organ and to localize the existence of cervical cancer. Based on the doctor’s observation, the empirical rate of testing 20 samples on the program is 100%.
Volume: 5
Issue: 2
Page: 304-310
Publish at: 2015-04-01
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